CVE-2024-4577
CRITICAL severity · CVSS 9.8 · OS command injection · actively exploited (CISA KEV)
9.8CVSS CRITICAL ● exploited ⚠ ransomware
🔴 Actively exploited in the wild (CISA Known Exploited Vulnerabilities).
⚠ Known use in ransomware campaigns. Added to KEV 2024-06-12. US federal agencies must patch by 2024-07-03.
Summary
In PHP versions 8.1.* before 8.1.29, 8.2.* before 8.2.20, 8.3.* before 8.3.8, when using Apache and PHP-CGI on Windows, if the system is set up to use certain code pages, Windows may use "Best-Fit" behavior to replace characters in command line given to Win32 API functions. PHP CGI module may misinterpret those characters as PHP options, which may allow a malicious user to pass options to PHP binary being run, and thus reveal the source code of scripts, run arbitrary PHP code on the server, etc.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)94%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
This vulnerability is being actively exploited in the wild — patch affected products urgently. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://github.com/rapid7/metasploit-framework/pull/19247Patch
- http://www.openwall.com/lists/oss-security/2024/06/07/1Advisory
- https://blog.orange.tw/2024/06/cve-2024-4577-yet-another-php-rce.htmlAdvisory
- https://cert.be/en/advisory/warning-php-remote-code-execution-patch-immediatelyAdvisory
- https://arstechnica.com/security/2024/06/php-vulnerability-allows-attackers-to-run-malicious-code-on-windows-servers/Advisory
- https://devco.re/blog/2024/06/06/security-alert-cve-2024-4577-php-cgi-argument-injection-vulnerability-en/Advisory
- https://github.com/11whoami99/CVE-2024-4577Exploit
- https://github.com/php/php-src/security/advisories/GHSA-3qgc-jrrr-25jvAdvisory